Humble Bundle: PC and Android 11
The current Humble Bundle: PC and Android 11 offers a variety of games for PC and Android at the pay what you want price tag.
Right now you can pay what you want for Thomas Was Alone, Bridge Constructor Playground, Cubemen, and Cubemen 2. If you pay more than the average price (currently $6.27 USD), you can tag on Small World 2 with Royal Bonus DLC, Blackwell 1: Legacy, Blackwell 2: Unbound, Blackwell 3: Convergence, and more games coming soon. If you pay $11 USD or more, you can get all of those games plus Surgeon Simulator 2013 and Anomaly Defenders.
Humble offers games at huge discounted prices while also supporting charity with every purchase. Customers can adjust their payment to be distributed to charity, game developers, and Humble tip.
Keep an eye out for new games being added to the Humble Bundle: PC and Android 11 here: https://www.humblebundle.com/